示例#1
0
文件: dir.c 项目: andy-shev/linux
static struct dentry *ovl_check_empty_and_clear(struct dentry *dentry)
{
	int err;
	struct dentry *ret = NULL;
	LIST_HEAD(list);

	err = ovl_check_empty_dir(dentry, &list);
	if (err)
		ret = ERR_PTR(err);
	else {
		/*
		 * If no upperdentry then skip clearing whiteouts.
		 *
		 * Can race with copy-up, since we don't hold the upperdir
		 * mutex.  Doesn't matter, since copy-up can't create a
		 * non-empty directory from an empty one.
		 */
		if (ovl_dentry_upper(dentry))
			ret = ovl_clear_empty(dentry, &list);
	}

	ovl_cache_free(&list);

	return ret;
}
示例#2
0
文件: dir.c 项目: gxt/linux
static struct dentry *ovl_check_empty_and_clear(struct dentry *dentry)
{
	int err;
	struct dentry *ret = NULL;
	enum ovl_path_type type = ovl_path_type(dentry);
	LIST_HEAD(list);

	err = ovl_check_empty_dir(dentry, &list);
	if (err) {
		ret = ERR_PTR(err);
		goto out_free;
	}

	/*
	 * When removing an empty opaque directory, then it makes no sense to
	 * replace it with an exact replica of itself.
	 *
	 * If no upperdentry then skip clearing whiteouts.
	 *
	 * Can race with copy-up, since we don't hold the upperdir mutex.
	 * Doesn't matter, since copy-up can't create a non-empty directory
	 * from an empty one.
	 */
	if (OVL_TYPE_UPPER(type) && OVL_TYPE_MERGE(type))
		ret = ovl_clear_empty(dentry, &list);

out_free:
	ovl_cache_free(&list);

	return ret;
}
示例#3
0
static struct dentry *ovl_check_empty_and_clear(struct dentry *dentry,
						enum ovl_path_type type)
{
	int err;
	struct dentry *ret = NULL;
	LIST_HEAD(list);

	err = ovl_check_empty_dir(dentry, &list);
	if (err)
		ret = ERR_PTR(err);
	else if (type == OVL_PATH_MERGE)
		ret = ovl_clear_empty(dentry, &list);

	ovl_cache_free(&list);

	return ret;
}